Troednodyn
c Gweler Encyclopædia Britannica, 2003, o dan “Cross”; The Cross—Its History and Symbolism, tudalen 40; a The Companion Bible, Oxford University Press, atodiad 162, tudalen 186.
c Gweler Encyclopædia Britannica, 2003, o dan “Cross”; The Cross—Its History and Symbolism, tudalen 40; a The Companion Bible, Oxford University Press, atodiad 162, tudalen 186.